Water Box Part Questioned

[jamie077]

I just was setting up a water box Marine X 110.4. Also came with the water box 190 protein skimmer. The parts got mixed up I was wondering if anyone could tell me what these two parts are for? I thought maybe skimmer but the manual or YouTube video didn’t mention them.

 

[Scallopking]

They kind of look like the silencers for the filter socks to me.

 

[jamie077]

They kind of look like the silencers for the filter socks to me.

Yep that’s it thanks